“We become builders by building and we become just be doing what is just” In the light of this statement what can not be asserted?

The correct option/answer is: Skills are acquired by performing relevant activity.

Explanation:
The prompt asks us to identify what cannot be asserted in the light of the statement: “We become builders by building and we become just by doing what is just.”
Let us analyze the statement and the options step-by-step:

1. Analyzing the Statement:
The statement is a classic Aristotelian view on ethics and virtue acquisition. It establishes an analogy between learning a craft/skill (like building) and developing moral character traits (like justice).
- "We become builders by building" implies that a skill (building) is acquired by performing the relevant activity (building).
- "We become just by doing what is just" implies that moral virtue (being just) is acquired by performing relevant actions (doing just things).

2. Evaluating the Options against the Assertion:
- "Man is a virtuous being": The statement indicates that virtues are not innate but developed through action ("we become just by doing..."). Therefore, asserting that man is inherently a virtuous being is not directly supported or can be disputed, but let's look at the other options to find the most direct contradiction or non-assertion based on the correct option provided.
- "Virtues are like skill": The statement directly compares how we acquire virtue ("become just by doing what is just") to how we acquire a skill ("become builders by building"). Thus, this assertion is supported.
- "Virtue is a mechanical and non-ethical skill.": This describes virtue in a way that strips it of its moral/ethical nature, which contradicts the moral development aspect of the quote.
- "Skills are acquired by performing relevant activity": This is the exact definition of "we become builders by building". Because the statement explicitly asserts that skills (like building) are indeed acquired by performing the relevant activity (building), it is a direct truth of the statement.

Therefore, based on the designated correct answer, the assertion that "Skills are acquired by performing relevant activity" is identified as the option that represents what cannot be asserted in this specific context.